Abb Schweiz Ag

Hitachi Energy Switzerland Ag

Abb Power Grids Switzerland Ag

Björn Sandin

Erik Doré

Olle Ekwall

Christer Sjöberg

Johannes Gran Hirvioja

Neven Bucan

Olov Andersson

Jonas Sandin

Curt Gillberg

A high voltage valve arrangement includes a high voltage valve unit; an external electric shield structure arranged at least partially around the high voltage modular valve unit and a grounding system. The grounding system includes a grounding system configured to be remotely extended from a retracted position to an extended position, whereby the extendable grounding device establishes electric connection with the external shield structure when it is extended from the retracted position.

Ground system for high voltage semiconductor valve

A remotely controllable grounding system including at least one movable rod element having at least one conductive and isolating sections and at least one conductor configured to be electrically connected to ground and the movable rod element. The grounding system including at least one pair of positive and negative grounding terminals arranged to be fixedly connected to electric equipment to be grounded. The grounding system includes a rod propulsion system arranged to be remotely controlled and configured to move the at least one movable rod element from an ungrounded position (U), in which the positive and negative grounding terminals are isolated from one another by the isolating section, into a grounded position (G), in which the positive and negative grounding terminals are galvanically connected with one another by the conductive section and in which grounded position the conductive section is connected to ground via the at least one conductor.

Grounding system

Growing community of inventors

Ludvika, Sweden

Björn Sandin